Valve with bell and spigot joint

Abstract

The utility model relates to a pipeline valve, in particular to a valve with a socket interface, which comprises a valve body and a connecting pipe, the valve body is provided with a socket pipe, one end of the connecting pipe is sleeved on the socket pipe, and the other end of the connecting pipe is provided with an interface for sleeving a pipeline to be connected. A sealing piece is arranged between the outer side wall of the socket pipe and the inner side wall of the connecting pipe, and an anti-disengaging connecting structure is arranged between the socket pipe and the connecting pipe. By arranging the socket pipe and the connecting pipe, sealing can be achieved through the sealing piece arranged on the connecting pipe in a sleeving mode and then locking operation is carried out when maintenance operation with water is carried out, the situation that water is in a continuous leakage state in the whole maintenance process is avoided, and improvement of the maintenance operation efficiency is facilitated.

Description

Technical Field

[0001] This utility model relates to a pipeline valve, and more particularly to a valve with a socket joint. Background Technology

[0002] In drainage or water supply networks, various valves, such as gate valves, are typically required. Currently, valves and pipelines are usually connected using a flange butt joint structure. This requires two flanges, one on the valve and the other on the pipeline, to be butt-jointed, with an end face seal between the flanges. The tightness of the seal between the two flanges directly affects the sealing effect. Some valves are connected to pipelines using a threaded connection structure. This requires a threaded hole on the valve and an external thread section on the pipeline. During installation, the valve needs to be rotated to connect the threaded hole and the external thread section. The gasket is pressed against the bottom of the threaded hole through the external thread section. Whether the threaded hole and the external thread section are tightened directly affects the sealing effect. In other words, existing valve and pipeline seals mainly rely on end face seals, requiring tightening to achieve a seal. During maintenance work with water present, water continuously leaks throughout the process, impacting maintenance efficiency.

[0003] In view of this, the applicant conducted in-depth research on valves, which led to this case. Utility Model Content

[0004] The purpose of this invention is to provide a valve with a socket interface that helps improve the efficiency of maintenance operations.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A valve with a socket joint includes a valve body and a connecting pipe. The valve body has a socket, one end of the connecting pipe is sleeved on the socket, and the other end forms an interface for sleeved with a pipe to be connected. A sealing element is provided between the outer side wall of the socket and the inner side wall of the connecting pipe, and an anti-detachment connection structure is provided between the socket and the connecting pipe.

[0007] As an improvement of this utility model, the anti-detachment connection mechanism includes a limiting sleeve fixedly or detachably connected to one end of the connecting tube and an anti-detachment ring located inside the limiting sleeve. The limiting sleeve includes a sleeve body with one end facing the connecting hole and a retaining ring fixedly connected to the end of the sleeve body away from the connecting hole. At least one through groove is provided on the side wall of the sleeve body. The anti-detachment ring includes at least one open ring body and locking arms respectively fixedly connected to the two ends of the same open ring body. Two locking arms are inserted in the same through groove. Each locking arm extends to the outside of the limiting sleeve, and a fastener for pressing the two locking arms together is provided between the two locking arms inserted in the same slot.

[0008] As an improvement of this utility model, an annular groove is provided on the outer wall of the connecting pipe to match each of the open annular bodies one-to-one, and the open annular bodies are inserted into the corresponding annular grooves.

[0009] As an improvement of this utility model, the fastener is a fastening bolt, and the sleeve is integrally connected to the connecting pipe.

[0010] As an improvement of this utility model, the anti-detachment connection mechanism includes a first connecting plate fixedly connected to the connecting pipe and a second connecting plate fixedly connected to the socket pipe, wherein the first connecting plate and the second connecting plate are fixedly connected to each other by bolts.

[0011] As an improvement of this utility model, the end of the connecting pipe facing the valve body is provided with a countersunk hole arranged coaxially with the inner hole of the connecting pipe, the sealing element is inserted into the countersunk hole, and the socket tube is fixedly connected to a pressure ring abutting against the sealing element on the side of the second connecting plate facing the first connecting plate, the outer diameter of the pressure ring being smaller than the inner diameter of the countersunk hole.

[0012] As an improvement of this utility model, the bottom surface of the countersunk hole is a conical surface, and the side of the sealing member facing the bottom surface of the countersunk hole is also a conical surface.

[0013] As an improvement of this utility model, the outer wall of the connecting pipe is provided with a tapered portion whose diameter gradually increases from the end away from the valve body to the end closer to the valve body. A third connecting disc is sleeved on the connecting pipe. The diameter of the inner hole of the third connecting disc gradually increases from the end away from the valve body to the end closer to the valve body, and the inner wall of the third connecting disc abuts against the tapered portion. A second connecting disc is connected to the socket pipe. The second connecting disc and the third connecting disc are fixedly connected to each other by bolts. The sealing element is located at a position corresponding to the tapered portion.

[0014] As an improvement of this utility model, the third connecting disc includes two detachably connected semi-disc rings.

[0015] By adopting the above solution, this utility model has the following beneficial effects:

[0016] 1. By setting up socket pipes and connecting pipes, when performing maintenance work with water, a seal can be first achieved by the sealing element fitted on the connecting pipe, and then the locking operation can be carried out. This avoids water leakage throughout the maintenance process and helps to improve the efficiency of maintenance operations.

[0017] 2. By setting up connecting pipes, the impact of pipe length errors on installation can be compensated.

[0018] 3. By setting a locking arm, the anti-loosening ring can be moved to the position where it needs to be locked and then clamped onto the pipe. During the locking process, the anti-loosening teeth will not move axially in the pipe, and the anti-loosening effect is relatively good. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 1;

[0020] Figure 2 This is a schematic diagram of the anti-detachment ring structure in Example 1;

[0021] Figure 3 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 2;

[0022] Figure 4 This is an exploded view of the anti-detachment connection structure of the pipe valve in Example 2;

[0023] Figure 5 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 3;

[0024] Figure 6 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 4;

[0025] Figure 7 This is a cross-sectional schematic diagram of the anti-detachment connection structure of the pipe valve in Example 4;

[0026] Figure 8 This is an exploded view of the anti-detachment connection structure of the pipe valve in Example 4;

[0027] Figure 9 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 5;

[0028] Figure 10 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 6;

[0029] Figure 11This is a cross-sectional schematic diagram of the anti-detachment connection structure of the pipe valve in Example 6;

[0030] Figure 12 This is a schematic diagram of the anti-detachment connection structure of the pipe valve in Example 8;

[0031] Figure 13 This is a partially exploded structural diagram of the anti-detachment connection structure of the pipe valve in Example 8;

[0032] Figure 14 This is a schematic diagram of the valve with a socket interface in Example 9;

[0033] Figure 15 This is a schematic diagram of the valve body in Example 9;

[0034] Figure 16 This is a schematic diagram of the valve with a socket structure in Example 10;

[0035] Figure 17 This is a schematic diagram of a partial cross-section of Example 10;

[0036] Figure 18 This is a schematic diagram of the valve with a socket structure in Example 11;

[0037] Figure 19 This is a schematic diagram of a partial cross-section of Example 11.

[0038] The corresponding markings in the diagram are as follows:

[0039] 10-Valve body; 11-Connection hole;

[0040] 12-Seal; 13-Anti-detachment groove;

[0041] 14-Slot; 15-Locking block;

[0042] 16-Connecting ear; 17-Card slot;

[0043] 18-First card plate; 20-Limit sleeve;

[0044] 21-Sleeve body; 22-Retaining ring;

[0045] 23-Through groove; 24-Through groove;

[0046] 25 - Inlet / outlet groove; 26 - Set thread hole;

[0047] 27-Hook; 28-Panel;

[0048] 29-Second card plate;

[0049] 30 - Anti-detachment ring; 31 - Open ring body;

[0050] 32-Locking arm; 33-Through hole;

[0051] 34 - Protrusion; 35 - Partition groove;

[0052] 40 - Pressure sleeve; 41 - Annular groove;

[0053] 42 - Connecting threaded hole; 43 - Connecting smooth hole;

[0054] 50 - Stop; 60 - Connecting pipe;

[0055] 61-Annular groove; 62-First connecting plate;

[0056] 63-Cone-shaped part; 64-Third connecting disc;

[0057] 70 - Socket tube; 71 - Second connecting plate;

[0058] 72-Pressure ring. Detailed Implementation

[0059] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0060] Example 1

[0061] like Figure 1 and Figure 2 As shown, this embodiment provides a pipe valve anti-disconnection connection structure, including a valve body 10 and an anti-disconnection component. The valve body 10 can be the body of a pipe connection valve, the valve body of a functional valve such as a gate valve or a throttle valve, or the housing of a detection device such as a water meter or a pressure gauge. In this embodiment, the valve body is taken as the body of a pipe connection valve for illustration.

[0062] The valve body 10 has a connection end for connecting to a pipeline. This connection end refers not only to the end face but also to the portion of the valve body 10 near the end face. It should be noted that the valve body 10 may have multiple connection ends, each connecting to different pipelines. The connection structures between each connection end and the pipeline may be the same or different. In this embodiment, the valve body 10 has two connection ends. One connection end uses a conventional flange connection structure to connect to the pipeline, which will not be described in detail here. This embodiment mainly describes the connection structure of the other connection end; therefore, the connection ends mentioned below refer to those without flange connections.

[0063] The connecting end has a connecting hole 11 for inserting a pipe, and a sealing element 12 for sealing the pipe is provided on the inner side wall of the connecting hole, that is, the sealing element 12 is located between the inner side wall of the connecting hole 11 and the outer side wall of the pipe. The structure of the sealing element 12 and its installation structure are existing structures. This embodiment adopts the sealing ring structure in the pipe anti-detachment connection structure disclosed in Chinese Utility Model Patent Publication No. CN219510345U, which will not be described in detail here.

[0064] The anti-detachment component includes a limiting sleeve 20 fixedly or detachably connected to the valve body 10, and an anti-detachment ring 30 located within the limiting sleeve 20. The limiting sleeve 20 includes a sleeve body 21 with one end facing the connecting hole 11, and a retaining ring 22 integrally connected to the end of the sleeve body 21 away from the connecting hole 11. In this embodiment, the sleeve body 21 is integrally connected to the valve body 10 (i.e., fixedly connected by an integral connection), meaning the sleeve body 21 and the valve body 10 are two different parts of the same component. This allows them to be obtained through a single casting process, resulting in relatively low cost. It should be noted that although the sleeve body 21 and the valve body 10 are integrally connected, the diameter of the inner hole of the sleeve body 21 needs to be larger than the diameter of the connecting hole 11 to accommodate the anti-detachment ring 20.

[0065] At least one through groove 23 is provided on the side wall of the sleeve 21. In this embodiment, it is described with only one through groove 23. The anti-detachment ring 30 includes at least one open ring body 31 and locking arms 32 respectively fixedly connected to the two ends of the same open ring body 31. The number of open ring bodies 31 is the same as the number of through grooves 23, that is, in this embodiment, only one open ring body 31 is provided. The outer diameter of the open ring 31 is larger than the diameter of the connecting hole 11, so that the end of the connecting end can hold the open ring 31 and prevent the open ring 31 from sliding into the connecting hole 11. Both locking arms 32 are inserted into the through groove 23 and extend to the outside of the limiting sleeve 20. A fastener (not shown in the figure) is provided between the two locking arms 32 to press the two locking arms 32 together. In use, the pipe is inserted into the open ring 31 and the connecting hole 11 at the same time. The fastener presses the two locking arms 32 together, which drives the two ends of the open ring 31 to move towards each other, so that the open ring 31 holds the pipe tightly and prevents it from falling off. It should be noted that when there are two or more through slots 23 and open rings 31, each through slot 23 is arranged around the axis of the sleeve 21, and each open ring 31 is also arranged in a ring to clamp the pipe. Two adjacent locking arms 32 are inserted in the same through slot 23, that is, two locking arms 32 are inserted in the same through slot 23. Each locking arm 32 extends to the outside of the limiting sleeve 20, and fasteners for pressing the two locking arms 32 together are provided between the two locking arms 32 inserted in the same slot 32.

[0066] Preferably, in order to improve the anti-detachment effect, in this embodiment, the inner sidewall of the open ring 31 is provided with anti-detachment teeth or anti-detachment texture.

[0067] Preferably, the fastener is a fastening bolt. Specifically, each locking arm 32 has a through hole 33, and the fastening bolt is inserted into each through hole 33. A nut is screwed onto the fastening bolt, and the two locking arms 32 are clamped between the nut and the nut of the fastening bolt. In this way, the two locking arms 32 can be pressed together by tightening the nut, so that the open ring 31 clamps the pipe. Of course, a through hole can also be opened on one of the locking arms 32, and a locking threaded hole coaxially arranged with the through hole can be opened on the other locking arm 32. The fastening bolt is inserted into the through hole and screwed onto the locking threaded hole, and the nut of the fastening bolt abuts against the locking arm 32 with the through hole. In this way, the two locking arms 32 can be pressed together by simply rotating the fastening bolt.

[0068] In addition, to facilitate the insertion of the anti-detachment ring 30 into the limiting sleeve 20 during use, in this embodiment, at least two protrusions 34 are fixedly connected to the outer wall of the open ring body 31. The retaining ring 22 is provided with through grooves 24 that respectively cooperate with each protrusion 34 one-to-one and inlet / outlet grooves 25 that cooperate with the two connecting arms 32. The inlet / outlet groove 25 extends to the sleeve body 21 and communicates with the through groove 23. The inlet / outlet groove 25 passes through both the retaining ring 22 and the sleeve body 21. The side of the inlet / outlet groove 25 away from the retaining ring 22 is flush with the side of the through groove 23 away from the retaining ring 22, and the length of the inlet / outlet groove 25 is greater than the length of the through groove 23. The outer diameter of the open ring 31 is less than or equal to the inner diameter of the retaining ring 22. When the positions of each protrusion 34 correspond one-to-one with each through groove 34, the two connecting arms 32 are located at positions corresponding to the inlet and outlet grooves 25. In use, each protrusion 34 is arranged one-to-one with each through groove 34, then the anti-detachment ring 30 is moved to pass through the retaining ring 22, and then the anti-detachment ring 30 is rotated so that each protrusion 34 and each through groove 34 are misaligned. The two connecting arms 32 move from the inlet and outlet grooves 25 into the through grooves 23. Finally, the two connecting arms 32 are locked together to achieve anti-detachment connection.

[0069] Example 2

[0070] like Figure 3 and Figure 4 As shown in the figure and with reference to other figures, the difference between the pipe valve connection structure provided in this embodiment and that in embodiment one is that the sleeve 21 of the limiting sleeve 20 in this embodiment is not integrally connected with the valve body 10, but the two are detachably connected. The retaining ring 22 of the limiting sleeve 20 does not have a through groove 24 and an inlet / outlet groove 25. The outer diameter of the open ring 31 is larger than the inner diameter of the retaining ring 22 and smaller than the inner diameter of the sleeve 21.

[0071] Specifically, the sleeve 21 is fitted onto the connecting end of the valve body 10, and a set screw hole 26 is provided on the side wall of the sleeve 21. A set screw (not shown in the figure) is screwed onto the set screw hole 26 and abuts against the connecting end, thereby realizing the detachable connection between the limit sleeve 20 and the valve body 10. The anti-detachment ring 30 needs to be installed in the limit sleeve 20 before the limit sleeve 20 is connected to the valve body 10. During installation, the two connecting arms 32 need to be inserted into the through groove 23 first, and then the open ring 31 is installed into the sleeve 21.

[0072] Preferably, in this embodiment, an anti-loosening groove 13 is provided on the outer wall of the connecting end to cooperate with the set bolt. The set bolt abuts against the bottom of the anti-loosening groove 13, which helps to prevent the set bolt from slipping along the axial direction of the pipe after loosening under external vibration, thus improving the anti-loosening effect. In addition, the anti-loosening groove 13 is an annular groove, and a slot 14 is provided on the side wall of the annular groove facing the retaining ring 32 to cooperate with the set bolt. In this way, during disassembly, only the set bolt needs to be loosened, without unscrewing the entire set bolt. The set bolt can be rotated to the position corresponding to the slot 14 by rotating the limiting sleeve 20, and then removed from the annular groove through the slot 14 to achieve disassembly. Similarly, during installation, the set bolt can be pre-screwed in, and then the set bolt can be inserted into the annular groove through the slot 14. Then, the limiting sleeve 20 can be rotated to achieve connection. At this time, the set bolt is equivalent to a hook.

[0073] In addition, a positioning block 15 is fixedly connected to the annular groove at a position next to the slot 14, which makes it easy for the user to quickly rotate the set bolt to the position corresponding to the slot 14 during disassembly.

[0074] Example 3

[0075] like Figure 5 As shown in the figure and with reference to other figures, the difference between the valve connection structure provided in this embodiment and that in embodiment two is that the valve body 10 used in this embodiment is a gate valve housing. The gate valve housing has two connection ends that are connected to the pipeline. One of the connection ends is connected to the pipeline using a conventional threaded connection structure, which will not be described in detail here. This embodiment mainly describes the connection structure of the other connection end. Therefore, the connection ends mentioned below refer to the connection ends with non-threaded connection structures.

[0076] In this embodiment, although the sleeve 21 is also sleeved on the connecting end, it does not have a set threaded hole and a set bolt. Instead, a hook 27 is fixedly connected to the end of the sleeve 21 away from the retaining ring 32 by an integral connection. A groove 17 that mates with the hook 27 is opened on the outer wall of the connecting end. That is, the groove 17 replaces the anti-disengagement groove 13 in embodiment 2 (the structure of the groove 17 and the anti-disengagement groove 13 can also be the same). Since the limiting sleeve 20 is usually a metal sleeve, the hook 27 that connects to the sleeve 21 is usually also made of metal and has relatively low elasticity. In order to facilitate the hook to be inserted into the groove, in this embodiment, the groove 17 is the same as the annular groove in embodiment 2. A slot 14 that mates with the hook 27 is opened on the side wall of the annular groove facing the retaining ring 32. In this way, the hook 27 can pass through the slot 14 into the annular groove, and then the limiting sleeve 20 is rotated to achieve the engagement.

[0077] Preferably, a positioning block is fixedly connected to the annular groove at a position next to the slot 14. Figure 5 (not shown), which allows the user to quickly rotate the hook 27 to the position corresponding to the slot 14 during disassembly.

[0078] Example 4

[0079] like Figure 6-8 As shown in the figure and with reference to other accompanying drawings, this embodiment provides a pipe valve anti-disconnection connection structure, including a valve body 10 and an anti-disconnection component. The valve body 10 can be the body of a pipe connection valve, the valve body of a functional valve such as a gate valve or a throttle valve, or the housing of a detection device such as a water meter or a pressure gauge. In this embodiment, the valve body is described as the body of a pipe connection valve.

[0080] The valve body 10 has a connection end for connecting to a pipeline. This connection end refers not only to the end face but also to the portion of the valve body 10 near the end face. It should be noted that the valve body 10 may have multiple connection ends, each connecting to different pipelines. The connection structures between each connection end and the pipeline may be the same or different. In this embodiment, the valve body 10 has two connection ends. One connection end uses a conventional flange connection structure to connect to the pipeline, which will not be described in detail here. This embodiment mainly describes the connection structure of the other connection end; therefore, the connection ends mentioned below refer to those without flange connections.

[0081] A connecting hole 11 for inserting a pipe is provided on the connecting end. A sealing element 12 for sealing the pipe is provided on the inner side wall of the connecting hole, that is, the sealing element 12 is located between the inner side wall of the connecting hole 11 and the outer side wall of the pipe. The structure and installation structure of the sealing element 12 are existing structures. This embodiment adopts the sealing ring structure in the anti-detachment pipe joint disclosed in Chinese Utility Model Patent No. CN216715490U. Specifically, the anti-detachment connection structure of the pipe valve provided in this embodiment also includes a pressure sleeve 40. The connecting end also has a countersunk hole arranged coaxially with the connecting hole 11. The sealing element 12 is provided in the countersunk hole. One end of the pressure sleeve 40 abuts against the sealing ring, which serves as the sealing element 12, and the other end is detachably connected to the limiting sleeve 20 mentioned below, that is, the pressure sleeve 40 is detachably connected to the limiting sleeve 20. In addition, the pressure sleeve 40 and the valve body 10 are respectively provided with corresponding connecting ears 16. The two corresponding connecting ears 16 are connected by bolt assembly, that is, the pressure sleeve 40 and the valve body 10 are detachably connected. In this way, while realizing the detachable fixed connection between the pressure sleeve 40 and the valve body 10, it can be ensured that the pressure sleeve 40 can be pressed tightly on the sealing ring.

[0082] The anti-detachment component includes a limiting sleeve 20 and an anti-detachment ring 30 located inside the limiting sleeve 20. The limiting sleeve 20 is detachably connected to the pressure sleeve 40 and indirectly detachably connected to the valve body 10. The limiting sleeve 20 includes a sleeve body 21 with one end facing the connection hole 11, a retaining ring 22 integrally connected to the end of the sleeve body 21 away from the connection hole 11, and a retaining plate 28 integrally connected to the end of the sleeve body 21 away from the retaining ring 22. A through groove 23 is provided on the side wall of the sleeve body 21. The anti-detachment ring 30 includes an open ring body 31 and locking arms 32 fixedly connected to both ends of the open ring body 31. Both locking arms 32 are inserted into the through groove 23 and extend to the outside of the limiting sleeve 20. A fastener (not shown in the figure) is provided between the two locking arms 32 to press the two locking arms 32 together. In use, the pipe is inserted into the open ring body 31 and the connecting hole 11 at the same time. The fastener is used to press the two locking arms 32 together, which drives the two ends of the open ring body 31 to move towards each other, so that the open ring body 31 grips the pipe and achieves anti-detachment.

[0083] Preferably, to improve the anti-detachment effect, in this embodiment, the inner sidewall of the open ring 31 is provided with anti-detachment teeth or anti-detachment grooves. Considering that the anti-detachment ring 30 is usually made of steel and has relatively low elasticity, in this embodiment, the inner sidewall and / or outer sidewall of the open ring 31 are provided with partition grooves 35. This helps to increase the elasticity or flexibility of the anti-detachment ring 30, making it suitable for pipes of different diameters. Of course, the structure of the anti-detachment ring 30 can also be the same as in Embodiment 1.

[0084] Preferably, the fastener is a fastening bolt. Specifically, each locking arm 32 has a through hole 33, and the fastening bolt is inserted into each through hole 33. A nut is screwed onto the fastening bolt, and the two locking arms 32 are clamped between the nut and the nut of the fastening bolt. In this way, the two locking arms 32 can be pressed together by tightening the nut, so that the open ring 31 clamps the pipe. Of course, a through hole can also be opened on one of the locking arms 32, and a locking threaded hole coaxially arranged with the through hole can be opened on the other locking arm 32. The fastening bolt is inserted into the through hole and screwed onto the locking threaded hole, and the nut of the fastening bolt abuts against the locking arm 32 with the through hole. In this way, the two locking arms 32 can be pressed together by simply rotating the fastening bolt.

[0085] In addition, the pressure sleeve 40 is provided with an annular groove 41 that cooperates with the clamping plate 28 and a notch that communicates with the annular groove 41. The number of notches is the same as that of the clamping plate 28. When one of the clamping plates 28 is located in a position corresponding to one of the notches, the other clamping plates 28 are arranged in a corresponding manner to the other notches. In this way, the clamping plate 28 can pass through the notch into the annular groove 41, and then the clamping between the limiting sleeve 20 and the pressure sleeve 40 is achieved by rotating the limiting sleeve 20. The anti-detachment ring 30 is restricted between the retaining ring 22 and the pressure sleeve 40.

[0086] Example 5

[0087] like Figure 9 As shown and with reference to other accompanying drawings, the difference between the valve anti-detachment connection structure provided in this embodiment and that in Embodiment 4 lies in the connection structure between the limiting sleeve 20 and the pressure sleeve 40. In this embodiment, the structure of the limiting sleeve 20 is the same as that in Embodiment 2, that is, the limiting sleeve 20 does not have a retaining plate, but instead has a set threaded hole 26 on the side wall of the sleeve body 21. A set bolt (not shown in the figure) is screwed onto the set threaded hole 26 and abuts against the annular groove of the pressure sleeve 40, thereby realizing a detachable connection between the limiting sleeve 20 and the pressure sleeve 40. In other words, the detachable connection structure between the limiting sleeve 20 and the pressure sleeve 40 in this embodiment is basically the same as the detachable connection structure between the limiting sleeve 20 and the valve body 10 in Embodiment 2, and will not be repeated here.

[0088] Example 6

[0089] like Figure 10 and Figure 11As shown in the figure and with reference to other figures, the difference between the valve anti-detachment connection structure provided in this embodiment and that in embodiment four is the different connection structure between the limiting sleeve 20, the pressure sleeve 40 and the valve body 10. Specifically, in this embodiment, the pressure sleeve 40 is not provided with connecting ears 16, but the limiting sleeve 20 is provided with connecting ears 16. Of course, the number of connecting ears 16 on the limiting sleeve 20 and the connecting ears 16 on the valve body 10 are the same and are arranged in a one-to-one correspondence. The two corresponding connecting ears 16 are connected by bolt assembly, that is, the limiting sleeve 20 and the valve body 10 are detachably connected. In this way, while realizing the detachable and fixed connection between the limiting sleeve 20 and the valve body 10, the pressure sleeve 40 can be pushed to press against the sealing ring.

[0090] In addition, a connecting threaded hole 42 is provided on the end of the sleeve 21 facing the connecting hole 11, and a connecting smooth hole 43 is provided on the pressure sleeve 40, which is coaxially arranged with the connecting threaded hole 42. A connecting bolt (not shown in the figure) is inserted in the connecting smooth hole 43 and is simultaneously screwed into the connecting threaded hole 42. The nut of the connecting bolt abuts against the pressure sleeve 40, thereby realizing a detachable fixed connection between the pressure sleeve 40 and the limiting sleeve 20.

[0091] Example 7

[0092] The difference between the valve connection structure provided in this embodiment and that in embodiment one is that the limiting sleeve 20 and the retaining ring 22 in this embodiment do not have through grooves 24 and inlet / outlet grooves 25, and the outer diameter of the open ring body 31 is larger than the inner diameter of the retaining ring 22 and smaller than the inner diameter of the sleeve body 21.

[0093] Since the anti-detachment ring 30 in the valve connection structure provided in this embodiment is difficult to assemble by assembly, it is necessary to install the anti-detachment ring 30 into the limiting sleeve 20 during remanufacturing. Specifically, the retaining ring 22 cannot be directly formed during casting, but is obtained by welding or other processes after the anti-detachment ring 30 is installed.

[0094] Example 8

[0095] like Figure 12 and Figure 13 As shown in the figure and with reference to other figures, the difference between the valve connection structure provided in this embodiment and that in embodiment two is that the valve body 10 used in this embodiment is a three-way housing. The three-way housing has three connection ends that are connected to the pipeline. The connection structure between the three connection ends and the pipeline can be the same or different. This embodiment only selects one connection end for description. Therefore, the connection end mentioned below refers to the connection end selected in this embodiment.

[0096] In this embodiment, although the sleeve 21 is also fitted onto the connecting end, it does not have a set threaded hole or a set bolt. The connecting end may also omit the anti-disengagement groove. In this embodiment, the outer wall of the connecting end is provided with at least two first snap-fit ​​plates 18 evenly distributed around the connecting hole 11. The inner wall of the sleeve 21 is provided with second snap-fit ​​plates 29 that mate one-to-one with each of the first snap-fit ​​plates 18. The first snap-fit ​​plates 18 abut against the side of the second snap-fit ​​plates 29 facing the retaining ring 22, and a stop block 50 is fixedly connected to the side of the second snap-fit ​​plates 29 facing the retaining ring 22. Furthermore, the distance between two adjacent first snap-fit ​​plates 18 is less than the length of the second snap-fit ​​plate 29, and the distance between two adjacent second snap-fit ​​plates 29 is also less than the length of the first snap-fit ​​plate 18, so that they can be interlaced.

[0097] During installation, the limiting sleeve 20 is rotated to a position where each of the first snap-fit ​​plates 18 and each of the second snap-fit ​​plates 29 are staggered. Then, the limiting sleeve 20 is moved so that each of the second snap-fit ​​plates moves from the side of the first snap-fit ​​plate 18 facing the retaining ring 22 to the side of the first snap-fit ​​plate 18 away from the retaining ring 22. Then, the limiting sleeve 20 is rotated until each of the first snap-fit ​​plates 18 abuts against the corresponding stop block 50. At this time, each of the first snap-fit ​​plates 18 abuts against the side of the corresponding second snap-fit ​​plate 29 facing the retaining ring 22.

[0098] Preferably, in this embodiment, a set screw hole is provided on the side wall of the sleeve 21, and a set screw is screwed onto the set screw hole and abuts against the connection end. This helps to prevent the limit sleeve 20 from loosening under external force or vibration.

[0099] Example 9

[0100] like Figure 14 and Figure 15 As shown in the figures and with reference to other accompanying drawings, this embodiment provides a valve with a socket joint, including a valve body 10 and a connecting pipe 60. The valve body 10 has a socket pipe 70, specifically, the socket pipe 70 is integrally connected to the main body of the valve body 10 as part of the valve body 10. The inner hole of the socket pipe 70 forms the valve's inlet or outlet channel. One end of the connecting pipe 60 is sleeved on the socket pipe 70, and the other end forms an interface for fitting a pipe to be connected. That is, both the socket pipe 70 and the pipe to be connected are inserted into the connecting pipe 60. Thus, a sealing element 12 can be provided between the outer wall of the socket pipe 70 and the inner wall of the connecting pipe 60 to achieve radial sealing. Similarly, radial sealing can also be achieved on the pipe to be connected by wrapping around the sealing element 12, thereby achieving a sealed connection before locking. The structure and installation structure of the seal 12 are existing structures. For example, the sealing ring structure and installation structure of the pipeline anti-detachment connection structure disclosed in Chinese Utility Model Patent No. CN219510345U can be used, which will not be described in detail here.

[0101] An anti-detachment connection structure is provided between the socket tube 70 and the connecting tube 60. The anti-detachment connection structure can adopt the structure of any one of the embodiments 1 to 8. Specifically, one end of the connecting tube 60 in this embodiment replaces the connecting end of the valve body in embodiment 7, and the socket tube 70 in this embodiment replaces the pipe in embodiment 7, thereby realizing the anti-detachment connection between the socket tube 70 and the connecting tube 60. That is, the anti-detachment connection mechanism includes a limiting sleeve 20 fixedly or detachably connected to one end of the connecting tube 60 and an anti-detachment ring 30 located inside the limiting sleeve 20. The structure and installation structure of the limiting sleeve 20 and the anti-detachment ring 30 are the same as those of any one of the embodiments 1 to 8.

[0102] It should be noted that the structures at both ends of the connecting pipe 60 can be the same or different. In this embodiment, the structures at both ends of the connecting pipe 60 are the same.

[0103] Preferably, in this embodiment, the outer wall of the connecting tube 60 is provided with annular grooves 61 that mate one-to-one with the open rings 31 of the anti-detachment connection structure (see embodiments one to eight). The open rings 31 are inserted into the corresponding annular grooves 61, which helps to further improve the anti-detachment performance. In addition, the sleeve 21 can be integrally connected with the connecting tube 60.

[0104] Example 10

[0105] like Figure 16 and Figure 17 As shown in the figures and with reference to other accompanying drawings, the main difference between the valve with a socket joint provided in this embodiment and that in Embodiment Nine lies in the anti-detachment connection structure between the socket tube 70 and the connecting tube 60. In this embodiment, the anti-detachment connection mechanism includes a first connecting plate 62 integrally connected to one end of the connecting tube 60 and a second connecting plate 71 integrally connected to the socket tube 70. The first connecting plate 62 and the second connecting plate 71 are fixedly connected to each other by bolts. It should be noted that the connecting plate can be a flange or a disc with multiple connecting ears, as long as mounting holes for bolts can be provided.

[0106] The other end of the connecting pipe 60 adopts the same structure as in Embodiment Six and is connected to the pipeline. That is, the other end of the connecting pipe 60 in this embodiment replaces the connecting end of the valve body in Embodiment Six.

[0107] Preferably, in this embodiment, the end of the connecting pipe 60 facing the valve body 10 has a countersunk hole arranged coaxially with the inner hole of the connecting pipe 60. The sealing member 12 is inserted into the countersunk hole. The socket pipe 70 has a pressure ring 72 fixedly connected to the side of the second connecting plate 71 facing the first connecting plate 62, which abuts against the sealing member 12. The outer diameter of the pressure ring 72 is smaller than the inner diameter of the countersunk hole. This allows the pressure ring 72 to press the sealing member 12 tightly during locking, preventing the sealing member 12 from failing under high pressure, thus helping to improve the high-pressure sealing effect. In addition, the bottom surface of the countersunk hole is preferably a conical surface, and the side surface of the sealing member 12 facing the bottom surface of the countersunk hole is also preferably a conical surface. This improves the radial sealing performance while pressing the sealing member 12 tightly with the pressure ring 72.

[0108] Example 11

[0109] like Figure 18 and Figure 19 As shown in the figures and with reference to other accompanying drawings, the main difference between the valve with a socket interface provided in this embodiment and that in Embodiment Nine lies in the anti-detachment connection structure between the socket tube 70 and the connecting tube 60. In this embodiment, the outer wall of the connecting tube 60 is provided with a tapered portion 63 whose diameter gradually increases from the end away from the valve body 10 to the end closer to the valve body 10. At the same time, a third connecting plate 64 is sleeved on the connecting tube 60. The diameter of the inner hole of the third connecting plate 64 gradually increases from the end away from the valve body 10 to the end closer to the valve body 10, and the inner wall of the third connecting plate 64 abuts against the tapered portion 63. A second connecting plate 71 is connected to the socket tube 70. The second connecting plate 71 and the third connecting plate 64 are fixedly connected to each other by bolts, thereby forming an anti-detachment connection structure between the socket tube 70 and the connecting tube 60.

[0110] In addition, the seal 12 is located inside the connecting pipe 60 at a position corresponding to the tapered portion 63.

[0111] Preferably, the third connecting disc 64 includes two detachably connected half-disc rings, which facilitates the fitting of the third connecting disc 64 onto the connecting pipe 60 with a relatively large diameter. The detachable connection structure between the two half-disc rings is a conventional structure, such as the structure used in the connecting flange of a pipe sealing ring and pipe sealing connection structure disclosed in Chinese Utility Model Patent CN219062709U, which will not be described in detail here.

[0112] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, and these modifications all fall within the protection scope of the present invention.

Claims

1. A valve with a socket joint, comprising a valve body, characterized in that, It also includes a connecting pipe, the valve body has a socket pipe, one end of the connecting pipe is sleeved on the socket pipe, and the other end forms an interface for sleeved pipe to be connected, a sealing element is provided between the outer side wall of the socket pipe and the inner side wall of the connecting pipe, and an anti-detachment connection structure is provided between the socket pipe and the connecting pipe.

2. The valve with a socket joint as described in claim 1, characterized in that, The valve body has a connection end for connecting to a pipeline, and the connection end has a connection hole for inserting the pipeline. The anti-detachment connection structure includes a limiting sleeve fixedly or detachably connected to one end of the connecting pipe and an anti-detachment ring located inside the limiting sleeve. The limiting sleeve includes a sleeve body with one end facing the connection hole and a retaining ring fixedly connected to the end of the sleeve body away from the connection hole. At least one through groove is provided on the side wall of the sleeve body. The anti-detachment ring includes at least one open ring body and locking arms fixedly connected to both ends of the same open ring body. Two locking arms are inserted in the same through groove. Each locking arm extends to the outside of the limiting sleeve, and a fastener is provided between the two locking arms inserted in the same through groove to press the two locking arms together.

3. The valve with a socket joint as described in claim 2, characterized in that, The outer wall of the connecting pipe is provided with an annular groove that matches each of the open annular bodies one-to-one, and the open annular bodies are inserted into the corresponding annular grooves.

4. The valve with a socket joint as described in claim 2, characterized in that, The fastener is a fastening bolt, and the sleeve is integrally connected to the connecting pipe.

5. The valve with a socket joint as described in claim 1, characterized in that, The anti-detachment connection structure includes a first connecting plate fixedly connected to the connecting pipe and a second connecting plate fixedly connected to the socket pipe. The first connecting plate and the second connecting plate are fixedly connected to each other by bolts.

6. The valve with a socket joint as described in claim 5, characterized in that, The connecting pipe has a countersunk hole at one end facing the valve body, which is coaxially arranged with the inner hole of the connecting pipe. The sealing element is inserted into the countersunk hole. The socket tube is fixedly connected to a pressure ring that abuts against the sealing element on the side of the second connecting plate facing the first connecting plate. The outer diameter of the pressure ring is smaller than the inner diameter of the countersunk hole.

7. The valve with a socket joint as described in claim 6, characterized in that, The bottom surface of the countersunk hole is a conical surface, and the side of the seal facing the bottom surface of the countersunk hole is also a conical surface.

8. The valve with a socket joint as described in claim 1, characterized in that, The outer wall of the connecting pipe is provided with a tapered portion whose diameter gradually increases from the end away from the valve body to the end closer to the valve body. A third connecting plate is sleeved on the connecting pipe. The diameter of the inner hole of the third connecting plate gradually increases from the end away from the valve body to the end closer to the valve body, and the inner wall of the third connecting plate abuts against the tapered portion. A second connecting plate is connected to the socket pipe. The second connecting plate and the third connecting plate are fixedly connected to each other by bolts. The sealing element is located at a position corresponding to the tapered portion.

9. The valve with a socket joint as described in claim 8, characterized in that, The third connecting disc includes two detachably connected half-disc rings.

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